Multiple choice Arrange the following in the increasing order of dipole moment. NH3 2. PH3 3. AsH3 4. SbH3 1 < 2 < 3 < 4 1 < 3 < 2 < 4 4 < 2 < 3 < 1 3 < 4 < 1 < 2 4 < 3 < 2 < 1 Reveal answer Fill a bubble to check yourself E Correct answer Explanation Dipole moment of the hydrides of group 15 decreases down the group.